Search found 513 matches

by hhzhang
Sat Oct 16, 2021 9:36 am
Forum: Astrophotography
Topic: My astrophotography 2021
Replies: 339
Views: 23204

Re: My astrophotography 2021

The Moon-Jupiter conjunction yesterday. To the naked eye, the pair was quite near each other, yet in the image -- and in reality -- they are so far apart. https://lh3.googleusercontent.com/pw/AM-JKLW3ZbV9Udg6-LepviUxR03aj7Jp4Rmo2Y-gJ_RGl7A1DH4L3Vm8wJprMsr3SrYZ_9Vk-ITaovzePCNc4H95ymtv1DWBRdZwDeftO2NS...
by hhzhang
Sat Oct 16, 2021 8:03 am
Forum: Astrophotography
Topic: My astrophotography 2021
Replies: 339
Views: 23204

Re: My astrophotography 2021

The comet 67P is transiting the M35 region. Took ~20x30s exposures this early morning before the clouds rolled in. https://lh3.googleusercontent.com/pw/AM-JKLWPfWTmmJxHyLQr9PHvDYeeKSRr6KGmS5digMu08luyZLPULLUsv1iW5R7SBWEtnG3XilpBkGLlWraAkynVUkk59pV0zQlZWbbIz64xjPM7kupOOV1pdjd3Jt1lo4e8dgTdGWPB3OWmAHnJ...
by hhzhang
Sat Oct 16, 2021 7:59 am
Forum: Astrophotography
Topic: My astrophotography 2021
Replies: 339
Views: 23204

Re: My astrophotography 2021

By combining the image with another one captured weeks ago, here is the composite showing Venus blazing in the deep star field. https://lh3.googleusercontent.com/pw/AM-JKLXdv06IwSRhwP2iHtPMcJdvVhFZw_zj6EGZKYTGnRSxZRhlkjS-Ey23DnFUEGHH0zSL04OZb0IywFiJEUPDRCX_CKrmtyMhhn2YjFOlwZ1H9anbP8ETGwGYnRQfAJ4fsYc...
by hhzhang
Sat Oct 16, 2021 7:57 am
Forum: Astrophotography
Topic: My astrophotography 2021
Replies: 339
Views: 23204

Re: My astrophotography 2021

2021-Oct-16 The fun of shooting celestial wonders continued on Oct 15 and Oct (pre-dawn). In the phase of gibbous, the moon's overall shape is not appealing but the details and even subtle colors are more vivid than other phases. https://lh3.googleusercontent.com/pw/AM-JKLXIXLV4A3DFw0ctafI0V7ButSFDO...
by hhzhang
Fri Oct 15, 2021 9:12 am
Forum: Astrophotography
Topic: My astrophotography 2021
Replies: 339
Views: 23204

Re: My astrophotography 2021

It compares satisfactorily to my last year's attempt reposted below. https://lh3.googleusercontent.com/pw/AM-JKLWVNSJ3qzMuS2WcZLiA3y4EnynRDEz3SKOjT8CPAD5-8E8gHomMSP6Z9g3MEN2mzV1IFXkfeqbkAZJJQN4HSOYSBh_DwX9Oc1YVolO_vTqm_FEaBrqCbL2Ru1LCzp2rAicriC9AYXEFVfJVhe6kWuqbkA=w1463-h976-no?authuser=0 Simply tha...
by hhzhang
Fri Oct 15, 2021 8:51 am
Forum: Astrophotography
Topic: My astrophotography 2021
Replies: 339
Views: 23204

Re: My astrophotography 2021

Had to redo the Orion image -- there is very apparently an excessive amount of image plane tilt -- but I don't remember what went wrong. My remedy is to use the earlier Ha-filter image for L, for the sake of pinpoint-round stars. https://lh3.googleusercontent.com/pw/AM-JKLWQ_SPPPeResRaNPnCXJzWZ_poOV...
by hhzhang
Thu Oct 14, 2021 2:37 pm
Forum: Astrophotography
Topic: My astrophotography 2021
Replies: 339
Views: 23204

Re: My astrophotography 2021

Finally, I decided to take a number of exposures to complete my Orion-belt region nebuli project. Turns out the orientation is different from earlier session so here I could only use Ha, G and B filter data for the composit image. https://lh3.googleusercontent.com/pw/AM-JKLXU9IMjc_9NPy104uqilg4ZTltR...
by hhzhang
Thu Oct 14, 2021 10:48 am
Forum: Astrophotography
Topic: My astrophotography 2021
Replies: 339
Views: 23204

Re: My astrophotography 2021

Next target was M31, again! I just wanted to know if I have >1hour total exposure with a small 70mm APO and an OSC astrocam, what could I get under the Sg's light polluted sky? Well, compared with a mere 20min total exposure the other day, the resulting image from 92min total exposure shows much mor...
by hhzhang
Thu Oct 14, 2021 10:45 am
Forum: Astrophotography
Topic: My astrophotography 2021
Replies: 339
Views: 23204

Re: My astrophotography 2021

2021-Oct-13-14 A long night under the stars. The night sky began to clear at 10PM. And I had to shoot the Cygnus region because 1) that would complete my farewell to the summer night skies, 2) I hadn't taken a wide field of this famous region before. It turns out that under the terrible light pollut...
by hhzhang
Tue Oct 12, 2021 8:32 am
Forum: Astrophotography
Topic: M33 Triangulum Galaxy & M2 Cluster
Replies: 6
Views: 152

Re: M33 Triangulum Galaxy & M2 Cluster

Just curious how you got your camera astro-modified? I am super interested in getting my Sony a7 astro-modified too.